.content {
    img {
        width: 100%;
    }

}

#returnBtn {
    font-size: 18px;
    top: 20px;
    left: 15px;
    z-index: 1;
}

#playaudio {
    font-size: 50px;
    left: 50%;
    top: 50%;
    margin-left: -25px;
    margin-top: -25px;
    z-index: 11;
}

.lessonName {
    padding: 15px;

    h2 {
        font-size: 20px;
    }

    p {
        border-bottom: 1px solid #8a8a8a;
        padding-bottom: 5px;
    }
}

#startTraing {
    width: 330px;
    height: 50px;
    line-height: 50px;
    border-radius: 27px;
    background-color: #4294FF;
    margin: 0 auto
}

.teacherInfo {
    padding-left: 15px;
    padding-right: 15px;

    h2 {
        padding-top: 10px;
    }

    img {
        width: 80px;
        height: 80px;
        border-radius: 80px;
    }

    button {
        width: 80px;
        height: 35px;
        border-radius: 30px;
        background-color: #4294FF;
        margin-top: 15px;
    }
}

.trainigWay {
    div {
        flex-basis: 50%;
    }

    > :first-child {
        border-right: 1px dashed #bbb;
        margin-right: 10px;
    }
}